Fire and Gas Mapping Study is a critical safety assessment used to evaluate detector coverage, identify fire and gas hazards, and optimize Fire & Gas (F&G) detection systems in process facilities.
Early detection of hydrocarbon releases is essential to prevent escalation into major incidents. This study ensures that flame and gas detectors are strategically positioned and capable of detecting credible hazard scenarios under both normal and emergency conditions. The approach focuses on improving detection efficiency, minimizing blind spots, and enhancing overall facility safety.
The Fire and Gas Mapping Study was carried out for the FEED phase of the Kalamkas Sea and Khazar Field Development Project, covering both the Drilling Platform and Living Quarters.
The study evaluated and optimized the F&G detection system using a performance based approach aligned with international standards. Advanced 3D modelling tools were used to assess detector coverage and effectiveness across critical areas. As a result, detector locations were optimized, additional detectors were installed where required, and redundant detectors were removed to improve overall system performance and safety compliance.
The objective of the Fire and Gas Mapping Study is to ensure that flame and gas detectors are installed in line with the Fire & Gas Detection Philosophy and layout requirements.
The study focuses on improving detection effectiveness by:
This ensures reliable hazard detection and compliance with performance-based safety requirements.
The Fire and Gas Mapping Study follows a performance based approach in line with ISA TR84.00.07-2018, ensuring that detector placement is based on realistic risk scenarios rather than generic rules.
A detailed review of engineering documents such as plot plans, P&IDs, and process flow diagrams was carried out to identify high risk areas. Key equipment including pressure vessels, storage tanks, pumps, compressors, and heat exchangers were analyzed.
Typical scenarios considered include:
Each scenario was assessed to understand its potential impact and likelihood.
Once hazards were identified, consequence analysis was performed to evaluate fire radiation levels, gas dispersion behavior, and escalation potential. This was supported by frequency analysis using established industry data.
The combined assessment provided a clear understanding of risk levels and helped prioritize critical areas for detection.
Based on the risk assessment, performance targets for the F&G system were defined. The existing detector layout was then evaluated and optimized.
Detector coverage verification was carried out using advanced 3D mapping tools to ensure:
This step ensured that the system meets defined performance targets.
The reliability of the Fire & Gas system was assessed using Probability of Failure on Demand (PFD), considering system components such as sensors, logic solvers, and voting logic.
Overall system effectiveness was evaluated by combining:
This ensured that the system achieves the required level of risk reduction.
The study was conducted in accordance with internationally recognized guidelines:
The Fire and Gas Mapping Study identified several opportunities to improve the F&G detection system. The analysis highlighted areas where detector placement could be enhanced for better coverage and performance.
Key improvements include:
These changes resulted in improved detection coverage and overall system effectiveness.
The Fire and Gas Mapping Study plays a vital role in enhancing safety by ensuring optimal detector placement and reliable hazard detection.
By adopting a performance-based approach and advanced modelling techniques, the study improves detection coverage, reduces risk, and ensures compliance with international standards. This enables early hazard detection, minimizes escalation potential, and strengthens overall facility safety and reliability.
Contact us today for a comprehensive Fire & Gas Mapping Study to enhance detection coverage and overall safety.
